Entrance of minerals into the vascular cylinder of a eudicot root are regulated by the

A) cortex.
B) epidermis.
C) endodermis.
D) pericycle.
E) root hairs.

Endodermis

The endodermis is the innermost layer of cells in the root cortex of plants, serving as a selective barrier that regulates the flow of water and nutrients from the soil into the vascular system.

Vascular Cylinder

The central part of a root or stem containing the plant's vascular tissue, including xylem and phloem, responsible for water and nutrient transport.

Cortex

The outer layer of an organ or structure, such as the cerebral cortex of the brain or the cortex of the kidney.